JVC GY-DV300 free download

File name 60139.pdf

SERVICE MANUAL DV CAMCORDER GY-DV300U/UZ/E The photo shows the GY-DV300 DV camcorder with an optional KA-DV300 network pack. Differences between GY-DV300U and GY-DV300UZ are packed accessories. For more details, refer to the "SECTION 7 PACKING" on page 7-1. 100% recycled paper COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD. No. 60139 March 2002 Important Safety Precautions Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced. Precautions during Servicing 1. Locations requiring special caution are denoted by labels and inscriptions on the cabinet, chassis and certain parts of the product. When performing service, be sure to read and comply with these and other cautionary notices appearing in the operation and service manuals. 2. Parts identified by the symbol and shaded ( ) parts are critical for safety. Replace only with specified part numbers. Note: Parts in this category also include those specified to comply with X-ray emission standards for products using cathode ray tubes and those specified for compliance with various regulations regarding spurious radiation emission. 3. Fuse replacement caution notice. Caution for continued protection against fire hazard. Replace only with same type and rated fuse(s) as specified. 4. Use specified internal wiring. Note especially: 1) Wires covered with PVC tubing 2) Double insulated wires 3) High voltage leads 5. Use specified insulating materials for hazardous live parts. Note especially: 1) Insulation Tape 3) Spacers 5) Barrier 2) PVC tubing 4) Insulation sheets for transistors 6. When replacing AC primary side components (transformers, power cords, noise blocking capacitors, etc.) wrap ends of wires securely about the terminals before soldering. Fig.4 (3) Align the lengths of the wires to be connected. Insert the wires fully into the connector. Fig.1 7. Observe that wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.) 8. Check that replaced wires do not contact sharp edged or pointed parts. 9. When a power cord has been replaced, check that 10-15 kg of force in any direction will not loosen it. 12. Crimp type wire connector In such cases as when replacing the power transformer in sets where the connections between the power cord and power transformer primary lead wires are performed using crimp type connectors, if replacing the connectors is unavoidable, in order to prevent safety hazards, perform carefully and precisely according to the following steps. 1) Connector part number : E03830-001 2) Required tool : Connector crimping tool of the proper type which will not damage insulated parts. 3) Replacement procedure (1) Remove the old connector by cutting the wires at a point c

File name 60139B.pdf

[SUPPLEMENT] SERVICE MANUAL DV CAMCORDER GY-DV300U/UZ/E The photo shows the GY-DV300 DV camcorder with an optional KA-DV300 network pack. Printed wiring boards are changed. In this service manual shows new printed wiring boards. For more details, refer to the " History of printed wiring board" on page 4-1. This service manual only describes the matters that are different from the original service manual No.60139. On servicing refer to the service manual (No.60139) together with this manual. 100% recycled paper COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD. No. 60139B September 2002 TABLE OF CONTENTS Section title Page Section title Page SECTION 1 SERVICE CAUTIONS AND DISASSEMBLY 1.3 REMOVAL OF THE LENS AND OPTICAL COMPONENTS .. 1-4 1.3.1 Removing the lens hood ... 1-4 1.9.2 Operation in the first-level of the service menu ... 1-9 1.9.3 CAMERA 1 menu ... 1-9 SECTION 3 ELECTRICAL ADJUSTMENT 3.6 REWRITE SCHEMATIC DIAGRAM ... 3-17 3.6.1 How to use REWRITE board ... 3-17 SECTION 5 EXPLODED VIEW AND ASSEMBLY LIST 5.1 CHASSIS ASSEMBLY M 1 ... 5-2 5.2 RIGHT SIDE COVER ASSEMBLY M 2 ... 5-4 5.3 LEFT SIDE COVER ASSEMBLY M 3 ... 5-7 5.4 HANDLE ASSEMBLY M 4 ... 5-8 5.5 VF ASSEMBLY M 5 ... 5-11 5.6 MECHANISM ASSEMBLY M 6 ... 5-12 SECTION 6 ELECTRICAL PARTS LIST 6.1 IS BOARD ASSEMBLY PARTS LIST 0 1 ... 6-2 6.2 MAIN BOARD ASSEMBLY PARTS LIST 0 2 ... 6-2 6.3 A/L/S BOARD ASSEMBLY PARTS LIST 0 3 ... 6-10 6.4 MONITOR BL BOARD ASSEMBLY PARTS LIST 0 4 ... 6-14 6.5 INPUT1 BOARD ASSEMBLY PARTS LIST 0 5 ... 6-14 6.6 REG BOARD ASSEMBLY PARTS LIST 0 6 ... 6-14 6.7 SWR BOARD ASSEMBLY PARTS LIST 0 7 ... 6-16 6.8 TOP ZOOM BOARD ASSEMBLY PARTS LIST 0 8 ... 6-16 6.9 ZOOM BOARD ASSEMBLY PARTS LIST 0 9 ... 6-16 6.10 FOCUS BOARD ASSEMBLY PARTS LIST 1 0 ... 6.11 M RELAY BOARD ASSEMBLY PARTS LIST 1 1 ... 6.12 TALLY BOARD ASSEMBLY PARTS LIST 1 2 ... 6.13 CONNECT BOARD ASSEMBLY PARTS LIST 1 3 ... 6-17 6-17 6-17 6-17 SECTION 4 CHARTS AND DIAGRAMS 4.1 4.2 4.3 4.4 BOARD LOCATIONS ... 4-3 OVERALL WIRING DIAGRAM ... 4-4 MAIN BOARD SCHEMATIC DIAGRAM 0 2 ... 4-5 MAIN CIRCUIT BOARD ... 4-16 4.5 A/L/S BOARD SCHEMATIC DIAGRAM 0 3 ... 4-20 4.6 A/L/S CIRCUIT BOARD ...

File name 60139Bpar.pdf

SECTION 5 EXPLODED VIEW AND PARTS LIST SAFETY PRECATION Parts identified by the ! symbol are critical for safety. Replace only with specified parts numbers. NOTE Parts not denoted by parts numbers are not supplied by JVC. 5-1 5-1 5.1 CHASSIS ASSEMBLY M 1 View in the direction of arrow B Attach the board of the lens to the boss. Note) Attach it after the focus ring is assembled. Boss S13 Brings near in the direction of an arrow and stops at a ring base. RING BASE View in the direction of arrow I 76 View in the direction of the arrow G LENS ASSEMBLY View in the direction of the arrow D Note) A projection is on left-hand side. Clamp the wires CN22, CN12 and FFC CN19. 6 66 Note) Insert the CN12 (red, 3 pin) into hole. From HANDLE ASS'Y M 5 CN12 S15 1 S23 5 Front side CN22 Capacitor Projection Note) Let it go between the capacitor. Let it under the knob. Note) Let it go between the capacitor and VR. Let it under the knob. 4 CN21 CN19 69 70 71 2 77 75 View in the direction of arrow A LOCK BOARD ASSEMBLY 2 3 36 View in the direction of arrow H CN21 S8 HANDLE ASSEMBLY M 5 A/L/S BOARD From IRIS BOARD H I 3 52 E CN32 S28 Make a "R". Straight ac m ad S7 ae 51 S4 57 56 n 5 76 S1 42 67 4 B 6 8 6A G S5 Included by IRIS BOARD 11 drow up ab S5 58 Note) As shown in the figure, displace the FPC by 1 mm, fold it back and secure it with the insulating tape. Plate 3 mm approx. 35 mm approx. 44 43 i t 16 9 CN 21 S4 62 S13 Note 2) Pin Note) Set to the upper side. 12 S7 VF ASSEMBLY M 5 S9 LEFT SIDE COVER ASSEMBLY M 3 S16 79 S36 39 g' Directions of the Characters CN5 50 6C IC1 IRIS BOARD ASSEMBLY 2 0 68 S6 G v 1 Cut it into a 3 cm piece and secure it with the tape. CN5 508 j CN5 506 61 Wiring diagram S6 36 36 2 mm approx. Note) Fold back (on both sides). Note) Let the wire (Orange, 3-pin) go below the board. Note) Let the wire (White, 2-pin) go below the T. Sensor Base. 6E S7 6D Note 1) CCD 6B S5 47 48 S5 w Insulating tape Note) Cut it into a 3 mm piece and secure it with the tape. S5 46 MECHANISM ASSEMBLY M 6 Note) Clamp the STUD and wire. CCD 74 CN1 S 13 IC2 IS BOARD ASSEMBLY 0 1 A y 14 S11 S10 E P ON BOARD ASSEMBLY 1 CN 24 4 46 Included by CONNECT BOARD S16 Note) Let the wire (Red & Brown, 4-pin) go below the steel metal. Note) Connect the wire (White, 2-pin). 74 IC3 h' S14 d 32 D 28 17 drow up c 45 CN19 CONNECT BOARD ASSEMBLY 1 3 Distribute the wire 58 Note) Fold the wire as shown. 36 Let the FFC of drum 41 TEMP BOARD ASSEMBLY 2 1 Note) Pull the wire (Red & Brown, 4-pin) up to this position. 33 36 CONNECT CN19 S5 7 S4 e n JOG BOARD ASSEMBLY 1 18 S6 20 22 S7 36 73 CONNECT CN9 y Side view of MECHANISM S16 S4 CN CN 90 1 CN 2 CN m 5 36 h' 26 g' 34 S5 t CN 9 S8 s CN CN 50 z aa 6 CN 7 S5 a 54 j 61 62 36 Note) Cut it into a 2 cm piece and secure it with the tape. Note) Align the FPC from MECHA with left end of FFC from LOCK BOARD. a 40 S4 S5 38 a

File name 60139ic.pdf

4.21 IC BLOCK DIAGRAMS AD9842AJST-W [ANALOG DEVICES] (CCD Signal Processors) SDATA SL NC STBY NC SCK THREE-STATE AK6480AM-X [ASAHI KASEI] (8192bit EEPROM) DVDD2 VRB BA9738KV [ROHM] (6 Channel Switching Regurator Controller) Pin Description VRT CML DVSS 48 47 46 45 44 43 42 41 40 39 38 37 (LSB) D0 1 D1 2 D2 3 D3 D4 4 5 PIN 1 IDENTIFIER 36 35 34 33 AUX1IN AVSS D5 6 D6 7 D7 8 D8 9 D9 10 D10 11 (MSB) D11 12 AD9842A TOP VIEW (Not to Scale) AUX2IN AVDD2 32 BYP4 31 30 29 NC CCDIN (Top View) Block Diagram BYP2 28 BYP1 27 AVDD1 26 25 Pin Name CS SK DI DO RESET RDY/BUSY Vcc GND Description Chip select Serial clock input Serial data input Serial data outout Reset input RDY/BUSY output Power supply Ground AVSS AVSS NC = NO CONNECT 13 14 15 16 17 18 19 20 21 22 23 24 DRVDD DRVSS DVSS DATACLK CLPDM VD DVDD1 HD PBLK CLPOB SHP SHD PBLK AVDD AVSS HD VD CLPOB 4dB 6dB COLOR STEERING 2dB­36dB 2:1 MUX DRVDD CLP DRVSS CCDIN CDS PxGA 10/12 VGA ADC DOUT CLP 6 CLPDM 10 AUX1IN 2:1 MUX AUX2IN CLP CONTROL REGISTERS DVDD BUF 8 OFFSET DAC BANDGAP REFERENCE VRT VRB INTERNAL BIAS CML AD9841A/AD9842A SL DIGITAL INTERFACE INTERNAL TIMING DVSS BA3314F-X [ROHM] (Dual Pre-Amp. for Audio Signal) SCK SDATA SHP SHD DATACLK Pin Number 1, 2 3 ­ 12 1 ­ 12 13 14 15, 41 16 17 18 19 20 21 22 23 24 25, 26, 35 27 28 29 30 31 32 33 34 36 37 38 39 40 42 43 44 45 46 47 48 Name NC D0 ­ D9 D0 ­ D11 DRVDD DRVSS DVSS DATACLK DVDD1 HD PBLK CLPOB SHP SHD CLPDM VD AVSS AVDD1 BYP1 BYP2 CCDIN NC BYP4 AVDD2 AUX2IN AUX1IN CML VRT VRB DVDD2 THREE-STATE NC STBY NC SL SDATA SCK Type NC DO DO P P P DI P DI DI DI DI DI DI DI P P AO AO AI NC AO P AI AI AO AO AO P DI NC DI NC DI DI DI Description Internally Not Connected (AD9841A ONLY) Digital Data Outputs (AD9841A ONLY) Digital Data Outputs (AD9842A ONLY) Digital Output Driver Supply Digital Output Driver Ground Digital Ground Digital Data Output Latch Clock Digital Supply Horizontal Drive. Used with VD for Color Steering Control Preblanking Clock Input Black Level Clamp Clock Input CDS Sampling Clock for CCD's Reference Level CDS Sampling Clock for CCD's Data Level Input Clamp Clock Input Vertical Drive. Used with HD for Color Steering Control Analog Ground Analog Supply Internal Bias Level Decoupling Internal Bias Level Decoupling Analog Input for CCD Signal Internally Not Connected Internal Bias Level Decoupling Analog Supply Analog Input Analog Input Internal Bias Level Decoupling A/D Converter Top Reference Voltage Decoupling A/D Converter Bottom Reference Voltage Decoupling Digital Supply Digital Output Disable. Active High May be tied high or low. Do not leave floating. Standby Mode, Active High. Same as Serial Interface Internally Not Connected. May be Tied High or Low Serial Digital Interface Load Pulse Serial Digital Interface Data Serial Digital Interface Clock TYPE: AI = Analog Input, AO = Analog Output, DI = Digital Input, DO = Digital Output, P = Power. 4-39 4-39 AK4560AVQ [ASAHI KASEI] (16bit C

File name 60139ien.pdf

U E DV CAMCORDER DV CAMCORDER DV CAMKORDER CAMESCOPE DV INSTRUCTION MANUAL GY-DV300 GY-DV300 INSTRUCTION MANUAL BEDIENUNGSANLEITUNG MANUEL D'INSTRUCTIONS Thank you for purchasing this JVC product. Before operating this unit, please read the instructions carefully to ensure the best possible performance. For Customer Use : Enter below the Serial No. which is located on the body. Retain this information for future reference. Model No. GY-DV300 Serial No. LWT0017 This instruction manual is made from 100% recycled paper. Thank you for purchasing this JVC product. Before operating this unit, please read the instructions carefully to ensure the best possible performance. This instruction manual is made from 100% recycled paper. LWT0018 U IMPORTANT SAFEGUARDS 1. 2. 3. 4. 5. 6. 7. Read all of these instructions. Save these instructions for later use. All warnings on the product and in the operating instructions should be adhered to. Unplug this appliance system from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning. Do not use attachments not recommended by the appliance manufacturer as they may cause hazards. Do not use this appliance near water ­ for example, near a bathtub, washbowl, kitchen sink, or laundry tub, in a wet basement, or near a swimming pool, etc. Do not place this appliance on an unstable cart, stand, or table. The appliance may fall, causing serious injury to a child or adult, and serious damage to the appliance. Use only with a cart or stand recommended by the manufacturer, or sold with the appliance. Wall or shelf mounting should follow the manufacturer's instructions, and should use a mounting kit approved by the manufacturer. An appliance and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn. Slots and openings in the cabinet and the back or bottom are provided for ventilation, and to insure reliable operation of the appliance and to protect it from overheating, these openings must not be blocked or covered. The openings should never be blocked by placing the appliance on a bed, sofa, rug, or other similar surface. This appliance should never be placed near or over a radiator or heat register. This appliance should not be placed in a built-in installation such as a bookcase unless proper ventilation is provided. This appliance should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supplied to your home, consult your dealer or local power company. For appliance designed to operate from battery power, refer to the operating instructions. This appliance system is equipped with a 3-wire grounding type plug (a plug having a third (grounding) pin). This plug will only fit into a grounding-type power outlet. This is a safety feature. If you are unable to insert the plug into the outlet, contact yo

File name 60139par.pdf

SECTION 5 EXPLODED VIEW AND PARTS LIST SAFETY PRECATION Parts identified by the ! symbol are critical for safety. Replace only with specified parts numbers. NOTE Parts not denoted by parts numbers are not supplied by JVC. 5-1 5-1 5.1 CHASSIS ASSEMBLY M 1 View in the direction of arrow B Attach the board of the lens to the boss. Note) Attach it after the focus ring is assembled. Boss S13 RING BASE View in the direction of arrow I 5 View in the direction of the arrow G LENS ASSEMBLY View in the direction of the arrow D Note) A projection is on left-hand side. Clamp the wires CN22, CN12 and FFC CN19. 6 66 Note) Insert the CN12 (red, 3 pin) into hole. From HANDLE ASS'Y M 5 CN12 S15 1 S23 76 Front side CN22 Capacitor Projection Note) Let it go between the capacitor. Let it under the knob. Note) Let it go between the capacitor and VR. Let it under the knob. 4 CN21 CN19 69 70 71 2 77 75 View in the direction of arrow A LOCK BOARD ASSEMBLY 2 3 36 View in the direction of arrow H CN21 S8 HANDLE ASSEMBLY M 5 A/L/S BOARD From IRIS BOARD H I 3 52 E CN32 S28 Make a "R". Straight ac m ad S7 ae 51 S4 n 5 76 S1 42 67 4 B 6 8 6A G S5 Included by IRIS BOARD 11 drow up ab S5 58 Note) As shown in the figure, displace the FPC by 1 mm, fold it back and secure it with the insulating tape. Plate 1 mm approx. 35 mm approx. 44 43 i t 16 9 21 CN S16 S4 62 S13 Note 2) Pin Note) Set to the upper side. 12 S7 VF ASSEMBLY M 5 S9 LEFT SIDE COVER ASSEMBLY M 3 57 56 Directions of the Characters 6C IC1 IRIS BOARD ASSEMBLY 2 0 CN5 501 68 S6 G v Cut it into a 3 cm piece and secure it with the tape. 61 39 g' CN5 508 j CN5 506 Wiring diagram S6 36 36 2 mm approx. Note) Fold back (on both sides). Note) Let the wire (Orange, 3-pin) go below the board. Note) Let the wire (White, 2-pin) go below the T. Sensor Base. 6E S7 6D Note 1) CCD 6B S5 47 48 S5 w Insulating tape Note) Cut it into a 3 mm piece and secure it with the tape. S5 46 MECHANISM ASSEMBLY M 6 Note) Clamp the STUD and wire. CCD 74 CN1 S 13 IC2 IS BOARD ASSEMBLY 0 1 A y 14 S11 S10 E P ON BOARD ASSEMBLY 1 CN 24 4 46 Included by CONNECT BOARD S16 Note) Let the wire (Red & Brown, 4-pin) go below the steel metal. Note) Connect the wire (White, 2-pin). 74 IC3 h' S14 d 32 D 28 17 drow up c 45 CN19 CONNECT BOARD ASSEMBLY 1 3 Distribute the wire 58 Note) Fold the wire as shown. 36 63 Let the FFC of drum 41 TEMP BOARD ASSEMBLY 2 1 g' Note) Pull the wire (Red & Brown, 4-pin) up to this position. 33 CONNECT CN19 S5 7 S12 e n JOG BOARD ASSEMBLY 1 18 S6 20 22 S7 19 36 73 CONNECT CN9 y Side view of MECHANISM S16 S4 CN CN 90 1 CN 2 CN m 5 h' 26 34 S5 t CN 9 S8 s CN CN 50 z aa 6 CN 7 S5 a 54 j 61 62 36 Note) Cut it into a 2 cm piece and secure it with the tape. Note) Align the FPC from MECHA with left end of FFC from LOCK BOARD. a 40 S4 S5 38 a 46 45 63 MECHANISM S5 A/L/S BOARD ASSEMBLY 0 ad ae ac CN 22 CN CN 12 19 CN

File name 60139sch.pdf

SECTION 4 CHARTS AND DIAGRAMS SCHEMATIC DIAGRAM NOTES · Schematic safety precaution ! Parts are safety related parts. When replacing them, be sure to use the specified parts. · Voltage and waveform measurements Voltage: Measured with digital voltmeter in DC range; iris closed in REC mode. Value in ( ) is indicated only in the case PB voltage is different from that in REC mode. Waveform: Gray scale illuminated at more than 2000 lux at 3200K lighting. · Unit of value Unless otherwise specified 1) Resistance is in (1/6 W) 2) Capacitance is in µF 3) Inductance is in µH · Expression of wiring As the following circuit diagram is divided to print on some sheets, such an indication as the following is found in the case the wiring extends over two or more divided sections. 1) Circuit diagram divided into two or more sections: Board Board Name MAIN A/L/S Number of divided sections 1/11 ­ 11/11 1/4 ­4/4 · Wiring of connector (Example) To 1 6 DV MDA CN5506 Page 4-30 CN2 CAM SW3 20 CAM SW2 19 In the above example, CN2 is connected with CN5506 on 1 6 DV MDA board. · Signal flow on the diagram The following allow marks indicate the specified signal paths respectively. : Recording or EE signal path : Playback signal ptah : Recording and Playback signal path 02 03 A) · Others In regard of a board assembly whose circuit is composed of multilayered board patterns such 4- or 6-layered patterns, board patterns of the inner layers are omitted in this section. Note: For detail of each electrical part, refer to Section 6 "ELECTRICAL PARTS LIST" by it symbol number. This indication that wiring extends to "sheet 2" of the diagram. Pg2 HID3 Signal name In the above case, the end of the wiring is connected to the "HID 3" on the "sheet 2" section of the diagram. 4-1 REPLACING SURFACE MOUNT "CHIP" COMPONENTS · Some resistors, shorting jumpers (0 resistance), ceramic capacitors, transistors, and diodes are chip parts. These chip parts cannot be reused after they are once removed. · Chip resistors used in some circuits are of high precision type having little error in resistance. To demonstrate the full capacity of this set, place an order for proper parts referring to the diagrams and parts lists in the section 5. · Soldering cautions: 1) Do not apply heat for more than 3 seconds. 2) Avoid using a rubbing stroke when soldering. 3) Discard removed chips; do not reuse them. 4) Supplementary cementing is not required. 5) Use care not to scratch or otherwise damage the chips. [2] Chip transistors and chip F.E.T.s 2SA 2SB C 2SC 2SD C B E B E (Top view) 2SK G (Top view) 2SJ G CHIP PARTS PIN ARRANGEMENT [1] Digital transistors S D S D (Top view) (Top view) DTC 1 1 2 3 DTA 1 DTB 1 1 2 3 C [3] Chip diodes MA143A/MA742 MA142WA MA142A C R1 R2 R1 R2 B E B E (Top view) (Top view) (Top view) (Top view) (Top view) 1 Two digits show resistance of R1 in abbreviation. 43 14 24 44 : : : : 4.7 k 10 k 22 k 47 k 2 Roman letter show the resistive ratio bet

File name 60139tg.pdf

SECTION 8 DESCRIPTION OF CIRCUITRY 8.1 CAMERA BLOCK CIRCUIT DESCRIPTION 8.1.1 IS board The CCDs of 1/3" IT, 380,000-pixel (NTSC), 440,000-pixel (PAL) CCDs. Vsub is adjustment-free. ISB, ISG and ISR are connected through FPCs, which cannot be disconnected from the circuit boards. The CCDs are soldered directly onto the board. Therefore, soldering should be removed when replacing the CCD block assembly. The S/H circuit, which in the previous models has been located on the IS board, is located in the AFE block on the Main board that is located after the IS board. This has resulted in a simplification of the IS board. MAIN BOARD IS BOARD IC501 Q1 IC1 IC502 Q2 IC2 IC503 Q3 IC3 IC4 IC511 IC504 IC505 IC506 IC512 IC510 Fig. 8-1-1 8-1 8.1.2 Main board The main block can be divided into the three functional components of the AFE, PLD and DBE blocks. (1) AFE (Analog Front End) block IC501, 502 and 503 are the CCD signal processor ICs. They perform S/H, AGC and A/D conversions. It converts the analog output signals from the CCDs (pixel charge signals) into 12-bit digital signals and outputs them. The handling dynamic range is 400%. ICs 504, 505 and 506 form the V-driver circuit, which supplies the vertical drive pulses to the CCDs. ing the 27 MHz clock, are input to the LPF & Down-sampling circuit and output from it at 13.5 MHz. This signal is the Data Formatter (DV) signal. It is output in 4-bit widths by switching the LSB (4-bit) and MSB (4-bit) using the 2x clock (Fig. 8-1-3), and the signals obtained by this are the 4-bit Y and C (Cb/Cr) signals. These signals are sent to the VCR as the recorded signals. The COLOR-BAR-GEN circuit generates the color bar signal for use in recording. Apart from this, the color bar signal displayed on the LCD monitor and VIDEO output is generated by the encoder circuit in the DBE IC (IC621). When "BARS" is selected, both of the color bar signals are switched ON. Input 400% Graduation 4096 (12bit) Y7 MSB Y6 Y5 Y4 Y3 Y2 Y1 Y0 13.5MHz 27MHz Y3/Y7 Y2/Y6 Y1/Y5 Y0/Y4 To DVC 100% 0% 1120 128 (8bit) 0 LSB Fig. 8-1-2 (2) PLD (Program Logic Driver) block IC561 is the PLD IC, which can be divided functionally into the AFE-IF, TG, CLK-CTL, ZEBRA-ZONE, DV-REC-IF and DVPB-IF sections. 13.5MHz 8bit Y1 Y2 Y3 Y4 1 AFE-IF: The 12-bit RGB digital signals output from the AFE block are input to the MUX (multiplexer) in this section and output to the DBE block by sequential switching using the 3x clock (52 MHz). At the same time, this section also generates the Y(AFY) signal for use in the lens autofocusing from the RGB signals, and output the Y(AFY) signal to the lens. The LINE REVERSE circuitry inverts (by mirror image inversion) the Bch signal, which has been inverted by the gapless prism (see section 8.2, "New prism optics") to return it to the normal signal. 4bit Y1L Y1M Y2L Y2M Y3L Y3M Y4L Y4M 27MHz Fig. 8-1-3 6 DV-PB-IF: The 27 MHz, 4-bit wide Y and C (Cb/Cr) playback signals from the VCR are input to the Data Forma